Space

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Across
  1. 2. To send a rocket or spacecraft into space. Man's best friend
  2. 4. A journey carried out to achieve a scientific goal.
  3. 5. A vehicle designed to travel beyond Earth's atmosphere.
  4. 7. To investigate or travel somewhere to learn more about it.
  5. 10. A person trained to travel and work in space.
Down
  1. 1. The layer of gases surrounding a planet.
  2. 3. Everything that exists, including all stars, galaxies and planets.
  3. 6. The force that pulls objects towards one another.
  4. 8. The path followed by a planet or spacecraft around another object.
  5. 9. A huge collection of stars, planets and other objects in space.